/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "dma.h"
#include "i2c.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "oled.h"
#include "stdio.h"
#include "string.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
uint8_t receiveData[50];
uint8_t breath_delay=1;

uint8_t LED_State=0;
uint8_t LED_Brightness=0;
uint32_t LED_last_time=0;

int i=0;   //OLED
uint32_t OLED_Interval=50; //显示间隔
uint32_t OLED_last_time=0;

uint8_t uart_ready=0;

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

//状态0：占空比增加；状态1：占空比减小
void Breathing_Led(){
	uint32_t now =HAL_GetTick();


	if(now-LED_last_time>breath_delay){
		LED_last_time=now;
		if(LED_State==0){
			LED_Brightness++;
			if(LED_Brightness>=99){
				LED_State=1;
			}
		}else if(LED_State==1){
			LED_Brightness--;
			if(LED_Brightness<=0){
				LED_State=0;
			}
		}
		__HAL_TIM_SET_COMPARE(&htim3,TIM_CHANNEL_1,LED_Brightness);

	}
}

void OLED_Name(){
	uint32_t now =HAL_GetTick();

	if(now-OLED_last_time>=OLED_Interval){
		OLED_last_time=now;
		if(i<100){
			i++;
		}else if(i>=100){
			i=0;
		}
		 OLED_NewFrame();
		 OLED_PrintString(120-2*i, 30, "周颖", &font16x16, OLED_COLOR_NORMAL);
		 OLED_ShowFrame();


	}
}

void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size){
	if(huart==&huart2){
//		HAL_UART_Transmit_DMA(&huart2, receiveData,Size);  //测试

		if(Size==1){
			breath_delay=receiveData[0]-'0';
		}else if(Size>=2){
    		breath_delay=10*(receiveData[0]-'0')+(receiveData[1]-'0');
		}

		memset(receiveData, 0, sizeof(receiveData));
		HAL_UARTEx_ReceiveToIdle_DMA(&huart2, receiveData, sizeof(receiveData));
	}
}


/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_TIM3_Init();
  MX_USART2_UART_Init();
  MX_I2C1_Init();
  /* USER CODE BEGIN 2 */
  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_1);
  HAL_Delay(20);
  OLED_Init();

  OLED_DisPlay_On();
  // 简单串口测试
  char test_msg[] = "=== 系统启动 ===\r\n";
  HAL_UART_Transmit(&huart2, (uint8_t*)test_msg, strlen(test_msg), 1000);


  HAL_UARTEx_ReceiveToIdle_DMA(&huart2, receiveData, sizeof(receiveData));

  __HAL_UART_ENABLE_IT(&huart2,UART_IT_IDLE);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
	  Breathing_Led();

	  OLED_Name();

	  HAL_Delay(1);
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */
//这里用了AI，因为某次下载后出现了有C++和嵌入式环境什么不匹配的问题
__attribute__((weak)) void __cxa_pure_virtual() {
    while(1);
}

__attribute__((weak)) void __aeabi_unwind_cpp_pr0() {
    while(1);
}

__attribute__((weak)) void __aeabi_unwind_cpp_pr1() {
    while(1);
}

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
